The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2012
Filed:
Jul. 23, 2010
Michael L. Rhodes, Richfield, MN (US);
Brian C. Krafthefer, Stillwater, MN (US);
David B. Kittleson, Minneapolis, MN (US);
Hogbin MA, Eden Prairie, MN (US);
Michael L. Rhodes, Richfield, MN (US);
Brian C. Krafthefer, Stillwater, MN (US);
David B. Kittleson, Minneapolis, MN (US);
Hogbin Ma, Eden Prairie, MN (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A system having a particulate matter sensor in an exhaust stream of an engine upstream from a particulate filter and another such sensor downstream from the filter. There may also be an exhaust gas recirculation (EGR) control on the engine. The amount of particulate matter in or loading of the filter may be determined by the upstream filter. The working condition of the filter may be determined by the downstream sensor. The filter may have a heater and control for providing operational and particulate matter burn-off temperatures to the filter. A processor may be connected to the sensors, the EGR control and the filter heater control.